Camera Troubles

I'm an amateur user and has been using my E PL 1 for over a year. Not until recently, I encountered this problem of not being able to push any other buttons other than the on/off and shutter buttons. I was wondering if anyone has encountered a similar problem as I did.

When I turn my camera on, it automatically does that sound when you press the shutter button half-way and the green dot just stays on. I've tried draining out the battery and taking my lens out and putting it back on again. Both didn't work.

I'm not sure if I am just missing something about the camera settings or if my camera is broken.